Metal pouring method for the die casting process

Patent metadata

Field	Value
Publication number	US-9597729-B2
Application number	US-201514613991-A
Country	US
Kind code	B2
Filing date	Feb 4, 2015
Priority date	Feb 4, 2015
Publication date	Mar 21, 2017
Grant date	Mar 21, 2017

Abstract

A method of transferring molten metal to a die casting mold is disclosed. The method includes providing a ladle with a dip well and a dispensing nozzle having a fluid metal filter formed therein as well as providing a receptacle fluidly between the ladle and the mold. Further the method includes delivering the molten metal from the ladle to the receptacle by positioning an exit face of the dispensing nozzle over the receptacle and rotating the ladle such that the exit face of the dispensing nozzle is repositioned proximal the bottom of the receptacle and conveying the molten metal that has been delivered to the receptacle into a mold cavity that is placed in fluid communication therewith.

First claim

What is claimed is:

1. A method of transferring molten metal to a die casting mold, the method comprising:
providing a ladle with a dip well and a dispensing nozzle formed therein, wherein said dispensing nozzle is removable from a dispensing nozzle receptor formed on said ladle;
providing a receptacle fluidly between said ladle and said mold;
delivering said molten metal from said ladle to said receptacle by positioning an exit face of said dispensing nozzle over said receptacle and rotating said ladle such that said exit face of said dispensing nozzle is repositioned proximal the bottom of said receptacle; and
conveying said molten metal that has been delivered to said receptacle into a mold cavity that is placed in fluid communication therewith,
wherein said dispensing nozzle comprises a fluid metal filter formed therein.

2. The method of claim 1 , wherein said receptacle is a shot sleeve.

3. The method of claim 1 , wherein the method further comprises affixing said dispensing nozzle to said dispensing nozzle receptor.

4. The method of claim 1 , wherein said fluid metal filter is a porous ceramic filter disposed within the length of said dispensing nozzle.

5. The method of claim 4 , wherein said ceramic filter is configured to allow for a 6 pound/sec flow rate of molten metal into said receptacle with no oxide films larger than 1×1 mm.

6. The method of claim 1 , wherein said fluid metal filter is a screen comprising a refractory material disposed proximal said exit face of said dispensing nozzle.

7. The method of claim 6 wherein said screen is disposed on said exit face of said dispensing nozzle.

8. The method of claim 6 , wherein said screen comprises a mesh opening of approximately 0.9 mm to approximately 1.1 mm.

9. The method of claim 6 , wherein said refractory material is fiberglass.

10. The method of claim 1 , wherein said dispensing nozzle and said dip well are disposed on opposite sides of said ladle.

11. The method of claim 1 , wherein said exit face of said dispensing nozzle reaches the bottom of said receptacle upon rotating said ladle.

12. The method of claim 6 , wherein said exit face of said dispensing nozzle is contoured to substantially match the bottom of the receptacle.

13. The method of claim 1 , wherein rotation of said ladle is robotically controlled.

14. A method of transferring molten metal to a die casting mold, the method comprising:
providing a ladle with a dip well and a dispensing nozzle receptor formed on opposite sides of said ladle,
affixing a dispensing nozzle to said dispensing nozzle receptor;
providing a receptacle fluidly between said ladle and said mold;
collecting said molten metal in said ladle;
delivering said molten metal from said ladle to said receptacle by positioning an exit face of said dispensing nozzle over said receptacle and rotating said ladle such that said exit face of said dispensing nozzle is repositioned proximal the bottom of said receptacle; and
conveying said molten metal that has been delivered to said receptacle into a mold cavity that is placed in fluid communication therewith,
wherein said dispensing nozzle comprises a fluid metal filter formed therein and said receptacle is a horizontal shot sleeve.

15. The method of claim 14 , wherein said exit face of said dispensing nozzle reaches the bottom of said receptacle upon rotating said ladle.

16. The method of claim 15 , wherein said exit face of said dispensing nozzle is contoured to substantially match the bottom of the receptacle.

17. The method of claim 14 , wherein said fluid metal filter is a porous ceramic filter disposed within the length of said dispensing nozzle.

18. The method of claim 17 , wherein said ceramic filter is configured to allow for a 6 pound/sec flow rate of molten metal into said receptacle with no oxide films larger than 1×1 mm.

19. The method of claim 14 , wherein said fluid metal filter is a screen comprising a refractory material disposed proximal said exit face of said dispensing nozzle.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Goettsch David D
• Ohlrich Brad A
• Traub Jason R
• Walker Michael J

Classifications

• B22D35/04 Primary

  into moulds, e.g. base plates, runners · CPC title

• B22D17/30 Primary

  Accessories for supplying molten metal, e.g. in rations (supplying molten metal in ration in general B22D39/00) · CPC title

• B22D17/28

  Melting pots · CPC title

• B22D43/004

  by using filtering means (B22C9/086 takes precedence) · CPC title